How to get data from a datagrid by a datarowview in WPF with C#

Question

1.00/5 (1 vote)

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I have a DataGrid which is bind to a Generic list.I want to get values from datagrid by a datarowView but Show an error invalid cast exception was caught

What I have tried:

My Code is

C#

private void dgSearch_SelectionChanged_1(object sender,SelectionChangedEventArgs e)
     {
         try
         {
            DataRowView drv=(DataRowView) dgSearch.SelectedItem;
            txtMRName.Text = drv["Id"].ToString();
            txtEditMrSe.Text = drv["Name"].ToString();
            dgSearch.Visibility = Visibility.Collapsed;
         }
         catch (Exception ex)
         {

         }
     }

Posted 18-Oct-16 0:52am

Member 12799217

Updated 20-Oct-16 0:19am

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Comments

Richard Deeming 18-Oct-16 9:29am

So debug your code and find out what type the SelectedItem actually is.

Also, don't silently swallow all exceptions. That makes it much harder to diagnose any problems. Only catch the exceptions you can actually deal with.

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Member 12799217 · Accepted Answer · 2016-10-20T00:19:00

public void filldatagrid()
{
long idclient =0;
MRinfoHelper _MRinfoHelper = new MRinfoHelper();
MRlistLogic objlist = new MRlistLogic();
List<MRInfoModel> lstMRInfoModel = new List<MRInfoModel>();
lstMRInfoModel =JsonConvert.DeserializeObject<List<MRInfoModel>>(_MRinfoHelper.MRList(true, idclient));
dgShowData.ItemsSource = lstMRInfoModel;

}

XML

<DataGrid HorizontalAlignment="Left" Name="dgSearch" Cursor="Hand" HeadersVisibility="None" Visibility="Collapsed" RowHeight="25" CanUserAddRows="False" AutoGenerateColumns="False" HorizontalGridLinesBrush="#FF808080" VerticalGridLinesBrush="#FF808080" SelectionChanged="dgSearch_SelectionChanged_1" Margin="55,205,0,0" VerticalAlignment="Top" Width="222" Height="Auto">
           <DataGrid.Columns>
               <DataGridTextColumn Header="ID" Binding="{Binding Path=Id}" Visibility="Collapsed" ></DataGridTextColumn>
           <DataGridTextColumn Header="Term" Width="*" Binding="{Binding Path=Name}"></DataGridTextColumn>
           </DataGrid.Columns>

C#

private void dgSearch_SelectionChanged_1(object sender, SelectionChangedEventArgs e)
    {
        try
        {
            var myListView = sender as DataGrid;
            if (myListView != null)
            {
                var selectedItem = myListView.SelectedItem.ToString();
                Type t = dgSearch.SelectedItem.GetType();
                System.Reflection.PropertyInfo[] props = t.GetProperties();
                string propertyValue = props[1].GetValue(dgSearch.SelectedItem, null).ToString();
              // txtMRName.Text = propertyValue;
                getDataByIdFun(Convert.ToInt64(propertyValue));
            }
        }
        catch (Exception ex) { }


    }

    public void getDataByIdFun(long id)
    {
        MRlistLogic objlist = new MRlistLogic();
        MRInfoModel _mrInfoModel = new MRInfoModel();
        _mrInfoModel = objlist.GetMRByID(id);
        txtMRName.Text = _mrInfoModel.Mrname;
    }